What do you mean by clouds?

Being covered by clouds and fog means that the scenery is hazy, and clouds block the line of sight, making it very blurred. The mountain is shrouded in mist, so it is impossible to see its true face clearly. Covered by clouds, the scenery is hazy, and the clouds block the line of sight and see it very blurred. Metaphor is mysterious and ambiguous. Describe the appearance of fog that covers the sun and the sky.